diff --git a/TrackingNtuples/scripts/mlenv-requirements.txt b/TrackingNtuples/scripts/mlenv-requirements.txt
index fc79e9c..5172580 100644
--- a/TrackingNtuples/scripts/mlenv-requirements.txt
+++ b/TrackingNtuples/scripts/mlenv-requirements.txt
@@ -85,7 +85,7 @@ tornado==6.0.1
 traitlets==4.3.2
 uproot==3.4.12
 uproot-methods==0.4.4
-urllib3==1.24.1
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 Werkzeug==0.14.1